混合动力机车动力电池组散热结构的优化分析  

Optimization analysis of heat dissipation structure for hybrid locomotive power battery pack

作　　者：高俊帅 张婷 韩亮 崔洪江[2] GAO Junshuai;ZHANG Ting;HAN Liang;CUI Hongjiang(CRRC Dalian Co.,Ltd.,Dalian 116022,China;Dalian Jiaotong University,Dalian 116028,China)

机构地区：[1]中车大连机车车辆有限公司,辽宁大连116022 [2]大连交通大学,辽宁大连116028

出　　处：《电力机车与城轨车辆》2024年第4期28-34,共7页Electric Locomotives & Mass Transit Vehicles

基　　金：辽宁省教育厅基本科研项目(LJKFZ20220203)。

摘　　要：混合动力机车的动力电池组工作在相对密闭的环境中,箱体内散热空间狭小,电池组工作温度和电池单体间的温差难以满足设计指标。针对该问题,文章分析了电池组冷却系统的结构原理及其生热速率影响因素,通过仿真计算研究了冷却液不同流速对电池组的平均温度和单体电池间温差的影响规律,并针对性地提出了流道结构优化设计方案。经模拟验证,优化方案能有效改善电池组的散热效果,且电池内部温度场更加均匀,单体电池之间的温度差显著下降。The power battery pack of the hybrid locomotive works in a relatively closed environment,and the heat dissipation space in the box is narrow.The working temperature of the battery pack and the temperature difference between the battery cells are difficult to meet the design specifications.Aiming at the problems,this paper analyzes the structure principle of the cooling system of the battery pack and the influencing factors of the heat generation rate.Through simulation calculation,the influence of different flow rates of the coolant on the average temperature of the battery pack and the temperature difference of the single battery is studied,and the optimization design scheme of the runner structure is proposed.The simulation results show that the optimization scheme can effectively improve the heat dissipation effect of the battery pack.The temperature field inside the battery is more uniform,and the temperature difference between the single cells is significantly reduced.

关 键 词：冷却系统 散热结构 流道结构 电池 温度 

分 类 号：U267[机械工程—车辆工程]